The Collaborative International Dictionary of English v.0.48:

Castrate \Cas"trate\, v. t. [imp. & p. p. Castrated; p. pr. &
   vb. n. Castrating.] [L. castrarus, p; p. of castrare to
   castrate, asin to Skr. [,c]astra knife.]
   1. To deprive of the testicles; to emasculate; to geld; to
      alter.
      [1913 Webster]

   2. To cut or take out; esp. to remove anything erroneous, or
      objectionable from, as the obscene parts of a writing; to
      expurgate.
      [1913 Webster]

            My . . . correspondent . . . has sent me the
            following letter, which I have castrated in some
            places.                               --Spectator.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

castrated \castrated\ adj.
   deprived of reproductive organs or sexual attributes.

   Syn: altered, neutered, unsexed, fixed.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

castrated
    adj 1: deprived of sexual capacity or sexual attributes [syn:
           castrated, unsexed] [ant: uncastrated]